Combatant Authority - The agency, service, organisation or authority with the legislative authority for control of the incident. Also referred to as the Responsible Authority or Agency.

Confined Space - Enclosed or partially enclosed space, which at atmospheric pressure during occupancy and is not intended as a workspace and may have restricted entry and exit. It may include but not restricted to storage tanks, vessels, boilers, silo, sewers, ducts and shaft. It may also include ship space entered through small hatchway or access point. (OH&S Regs 1995).

Fuel - Any material such as grass, leaf litter and live vegetation, which can be ignited and sustains a fire. Fuel is usually measured in tonnes per hectare.

Fuel Moisture Content - The water content of a fuel particle expressed as a percent of the oven dry weight of the fuel particle (%ODW).

Relative Humidity - The amount of water vapour in a given volume of air, expressed as a percentage of the maximum amount of water vapour the air can hold at that temperature.

REM - The REM (Radiation Equivalent-Man) is a unit of radiation dose equivalent, now superseded by the Sievert. A REM is one-hundredth of a Sievert.

RFS - Rural Fire Service (NSW)

RH - Relative Humidity

SACFS - South Australian Country Fire Service

SAFECOM - South Australian Fire and Emergency Services Commission

SAMFS - South Australian Metropolitan Fire Service

SAPOL - South Australian Police

SAR - Search and Rescue

SASES - South Australian State Emergency Service

Sealed Source - In a sealed source, the radioactive material is encapsulated in a non-radioactive material such as stainless steel. The encapsulation prevents the escape of the radioactive material but allows the radiation to pass through.

SEMC - State Emergency Management Committee (SA)

SEOC - State Emergency Operations Centre

SES - State Emergency Service

SFC - Standards of Fire Cover

SFEC - Standards of Fire and Emergency Cover (CFS)

Shielded Source - A shielded source is stored within a container, often a lead pot, which is designed to prevent radiation from escaping. While the containment is intact, no danger exists from this source.

Sievert - The Sievert is the standard unit of radiation dose equivalent. A micro-Sievert is one-millionth of a Sievert.

Structure Fire - A fire burning part, or all of any building, shelter, or other construction.

Warm Zone - The control zone at a hazardous materials site where personnel and equipment decontamination and hot zone support takes place. It includes control points for the access corridor, helping to reduce the spread of contamination (see Control Zones).